Question: When did the Pridnestrovian Moldavian Republic have the head of state of Yevgeny Shevchuk?
Paraphrase: At what time was Yevgeny Shevchuk the head of state of the Pridnestrovian Moldavian Republic?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q907112 p:P35 ?s . ?s ps:P35 wd:Q188409 . ?s pq:P39 ?value}